Key for a safety lock



FIG. 1 is a top, front and right side perspective view of a key for a safety lock showing my new design;

FIG. 2 is a front elevational view thereof, the rear view being a mirror image;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image; and,

FIG. 4 is a top plan view thereof.

The bottom of the key for a safety lock is flat and unornamented.

The broken lines of the curved, recessed portions illustrate portions of the key for a safety lock that form no part of the claimed design. 

CLAIM The ornamental design for a key for a safety lock, as shown and described. 